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Browse Dams

2,549 dams in the National Inventory of Dams.

National Inventory of Dams

Browse 2,549 dams from the NID database. Each record includes dam name, location, physical dimensions, hazard potential classification, condition assessment, purpose, owner information, and emergency action plan status. Use the filters below to search by state, hazard level, condition, or keyword.

Name State County Height (ft) Hazard Condition Year Purpose
Loyalton (Stafford) South Dakota Edmunds 33 Low — 1934 Recreation
C. Iverson South Dakota Potter 33 Low — 1947 Fire Protection, Stock, Or ...
Ring Thunder South Dakota Todd 33 High Fair 1974 Recreation
Dwyer South Dakota Jerauld 33 Low — 1966 Fire Protection, Stock, Or ...
Jensen Dam South Dakota Hughes 33 Low — 1981 Grade Stabilization
Gaylord Norman #2 South Dakota Stanley 33 Low — 1956 Fire Protection, Stock, Or ...
Dejong Bros. 7 South Dakota Lyman 33 Low — 1962 Fire Protection, Stock, Or ...
Norbert Bonhorst South Dakota Stanley 33 Low — 1955 Fire Protection, Stock, Or ...
Sunshine South Dakota Haakon 33 Low — 1933 Recreation
Herman #2 South Dakota Jones 33 Low — 1971 Fire Protection, Stock, Or ...
Olsen Dam South Dakota Meade 33 Low — 1980 Fire Protection, Stock, Or ...
Hix Number 1 South Dakota Jones 33 Low — 1965 Fire Protection, Stock, Or ...
Nohrenberg #3 South Dakota Mellette 33 Low — 1957 Fire Protection, Stock, Or ...
Sorum Dam South Dakota Perkins 33 Low — 1934 Recreation
Roy Mcginnis South Dakota Perkins 33 Low — 1956 Fire Protection, Stock, Or ...
Bergner Dam 1 South Dakota Brule 32 Low — 1949 Fire Protection, Stock, Or ...
Brost Number 1 South Dakota Jones 32 Significant — 1959 Fire Protection, Stock, Or ...
Carr #4 South Dakota Mellette 32 Low — 1957 Fire Protection, Stock, Or ...
O'Connell Dam South Dakota Haakon 32 Significant — 1999 Fire Protection, Stock, Or ...
Hickman No.2 South Dakota Ziebach 32 Low — 1949 Fire Protection, Stock, Or ...
Morris Jensen South Dakota Perkins 32 Low — 1946 Fire Protection, Stock, Or ...
Collins Dam South Dakota Ziebach 32 Low — 2000 Fish and Wildlife Pond
George Turner South Dakota Walworth 32 Low — 1950 Fire Protection, Stock, Or ...
Herman #10 South Dakota Jones 32 Low — 1964 Fire Protection, Stock, Or ...
The Heppner Dam South Dakota Fall River 32 Low — 1935 Fire Protection, Stock, Or ...
Spearfish Valley Ranch South Dakota Lawrence 32 Low — 1968 Irrigation
Woodruff South Dakota Hughes 32 Low — 1937 Recreation
Nohrenburg No. 1 South Dakota Mellette 32 Low — 1959 Fire Protection, Stock, Or ...
Ziemer Dam South Dakota Roberts 32 Low — 1998 Fish and Wildlife Pond
Mccasland and Schiller 4 South Dakota Meade 32 Low — 1968 Fire Protection, Stock, Or ...
Veryl Schroeder 2 South Dakota Pennington 32 Low — 1967 Fire Protection, Stock, Or ...
Triple 7 Ranch Dam South Dakota Custer 32 Low — 1963 Fire Protection, Stock, Or ...
D. Booth South Dakota Dewey 32 Low — 1938 Fire Protection, Stock, Or ...
Mollison Dam South Dakota Hughes 32 Low — 2000 Fire Protection, Stock, Or ...
Darrell Nelson Dam South Dakota Yankton 32 Low — 2015 Fish and Wildlife Pond
E.J. Mooney Dam No.1 South Dakota Meade 32 Low — 1959 Fire Protection, Stock, Or ...
Tift Dam South Dakota Meade 32 Low — 1979 Fire Protection, Stock, Or ...
Brost Number 6 South Dakota Jones 32 Low — 1953 Fire Protection, Stock, Or ...
Durkee South Dakota Meade 32 High Fair 1938 Recreation
Ferdig Number 1 South Dakota Jones 32 Low — 1959 Fire Protection, Stock, Or ...
Smith and Brost Number 1 South Dakota Jones 32 Low — 1965 Fire Protection, Stock, Or ...
Jans 1 South Dakota Mellette 32 Low — 1936 Fire Protection, Stock, Or ...
Garber Dam South Dakota Hughes 32 Low — 2000 Fire Protection, Stock, Or ...
Stanley Smeenk Dam No. 1 South Dakota Butte 32 Low — 1950 Fire Protection, Stock, Or ...
Gardner Lake Dam South Dakota Harding 32 High Fair 1948 Recreation
Bill Trask South Dakota Pennington 32 Low — 1964 Fire Protection, Stock, Or ...
Herman #9 South Dakota Jones 32 Low — 1958 Fire Protection, Stock, Or ...
Brost Number 4 South Dakota Jones 32 Low — 1954 Fire Protection, Stock, Or ...
Timber Lake Cattle CO 3 South Dakota Dewey 32 Low — 1970 Fire Protection, Stock, Or ...
Dowd Dam South Dakota Charles Mix 32 Low — 1935 Recreation

Frequently Asked Questions

Hazard potential is based on the consequences of dam failure, not the condition of the dam. High hazard means loss of human life is probable. Significant means economic and environmental losses are expected but no probable loss of life. Low means minimal losses are expected. The classification considers downstream population, infrastructure, and environmental resources.

Condition ratings reflect the physical state of the dam based on periodic inspections. Satisfactory means no deficiencies found. Fair means minor issues exist but no immediate action needed. Poor means safety deficiencies require remedial action. Unsatisfactory means the dam is unsafe and immediate corrective action is required.

Yes. Use the search field above to find dams by name. You can also combine the search with state, hazard, and condition filters to narrow your results. Each dam record links to a detail page with complete information.